If text is compressed, it can be easily stored, transmitted, and manipulated. The number 0.00000094 can be compressed as 9.4*10^7 or 9.4E-7. How to compress a piece of text? To study compression, let us take an example. In English language, we write everything with 26 alphabets, some punctuation and spaces. In computer everything is represented by 0 and 1 called bits.